{
  "id": "astro-ph/0411220",
  "version": "v3",
  "published": "2004-11-09T11:24:00.000Z",
  "updated": "2005-05-30T15:52:23.000Z",
  "title": "A general proof of the conservation of the curvature perturbation",
  "authors": [
    "David H. Lyth",
    "Karim A. Malik",
    "Misao Sasaki"
  ],
  "comment": "9 pages, revtex4, no figures; v2: 14 pages, main body and appendix extended, typos corrected, references added; v3: minor changes, typos corrected, references added",
  "journal": "JCAP 0505:004,2005",
  "doi": "10.1088/1475-7516/2005/05/004",
  "categories": [
    "astro-ph",
    "gr-qc",
    "hep-ph"
  ],
  "abstract": "Without invoking a perturbative expansion, we define the cosmological curvature perturbation, and consider its behaviour assuming that the universe is smooth over a sufficiently large comoving scale. The equations are simple, resembling closely the first-order equations, and they lead to results which generalise those already proven in linear perturbation theory and (in part) in second-order perturbation theory. In particular, the curvature perturbation is conserved provided that the pressure is a unique function of the energy density.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2005-05-30T15:52:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "general proof",
      "conservation",
      "linear perturbation theory",
      "second-order perturbation theory",
      "cosmological curvature perturbation"
    ],
    "tags": [
      "journal article",
      "famous paper"
    ],
    "publication": {
      "publisher": "IOP",
      "journal": "J. Cosmol. Astropart. Phys."
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 663990
    }
  }
}